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Icom America - 2 way radios

IC-746PRO

HF/50MHz/144MHz All Mode Transceiver

Specifications

Specifications

General

Frequency coverage*1

Receive
 
Transmit

(unit: MHz) 

0.030– 60.000*2
108.000–174.000*2
1.800– 1.999

3.500– 3.999

7.000– 7.300

10.100– 10.150

14.000– 14.350

18.068– 18.168

21.000– 21.450

24.890– 24.990

28.000– 29.700

50.000– 54.000

144.000–148.000

*1 Frequency coverage is depending on version.
*2 Some frequency ranges are not guaranteed.

Mode USB, LSB, CW, RTTY, AM, FM
Number of memory Ch. 102 (99 regular, 2 scan edges and 1 call)
Antenna connector

SO-239×3

(2 for HF/50MHz and 1 for 144MHz bands; 50Ω)

Temperature range

–10°C to +60°C;

+14°F to +140°F

Frequency stability Less than ±7ppm from 1 min. to 60 min. after power ON. After that, rate of stability change is less than ±1ppm at 25°C (+77°F). Temperature fluctuations (0°C to +50°C; +32°F to +122°F) less than ±5ppm.
Frequency resolution 1Hz
Power supply requirement 13.8V DC ±15%
Power consumption
Tx Max. power 23A
Rx Standby 2.2A
  Max. audio 3.0A

Dimensions

(projections not included)

287(W)×120(H)×316.5(D) mm;

11516(W)×42332(H)×121532(D) in

Weight (approx.) 9.0kg; 19lb 13oz
ACC 1 connector 8-pin DIN connector
ACC 2 connector 7-pin DIN connector
CI-V connector 2-conductor 3.5 (d) mm (18″)
DATA connector Mini DIN 6-pin
Transmitter

Output power

(continuously adjustable)

SSB, CW, RTTY, FM 5–100W
AM 5–40W
Modulation system
SSB PSN modulation
AM Low power modulation
FM Phase modulation
Spurious emission

Less than –50dB (HF bands)

Less than –60dB (50/144MHz band)

Carrier suppression More than 40dB
Unwanted sideband suppression More than 55dB
deltaTX variable range ±9.99kHz
Microphone connector 8-pin connector (600Ω)
ELE-KEY connector 3-conductor 6.35(d) mm (14″)
KEY connector 3-conductor 6.35(d) mm (14″)
SEND connector Phono (RCA)
ALC connector Phono (RCA)
Receiver
Receive system Triple conversion superheterodyne system
Intermediate frequencies

1st 64.455MHz

2nd 455kHz

3rd 36kHz

Sensitivity (typical):

Frequency

Range (MHz)

SSB, CW, RTTY
(at 2.4kHz BW)
AM
(at 6kHz BW)
FM
(at 15kHz BW)
0.50–1.799 13μV
1.80–27.99 0.16μV*1 2μV*1
28.0–29.99 0.16μV*1 2μV*1 0.5μV*1
50.0 –54.0 0.13μV*3 1μV*2 0.25μV*2
144.0–148.0 0.11μV*3 1μV*3 0.18μV*3

10dB S/N for SSB, CW, RTTY and AM, 12db SINAD for FM

*1Preamp is ON
*2Preamp is ON

*3Preamp is ON

Squelch sensitivity
SSB, CW, RTTY
FM

(Pre-amp: OFF)
Less than 5.6μV
Less than 1μV

Selectivity
SSB (BW: 2.4kHz)
 
  

CW (BW: 500Hz)
 
RTTY (BW: 350Hz)
 

AM (BW: 6kHz)
 

FM (BW: 15kHz)

(representative value)
More than 2.4kHz/–6dB
Less than 3.2kHz/–40dB
Less than 3.6kHz/–60dB
Less than 4.3kHz/–80dB
More than 500Hz/–6dB
Less than 700Hz/–60dB
More than 360Hz/–6dB
Less than 650Hz/–60dB
More than 6.0kHz/–6dB
Less than 15.0kHz/–60dB
More than 12.0kHz/–6dB
Less than 20.0kHz/–60dB

Spurious and image

rejection ratio

More than 70dB (HF, 50MHz)

More than 60dB (144MHz)

(except IF through on 50MHz)

AF output power

(at 13.8V DC)

More than 2.0W at 10% distortion

with an 8Ω load

RIT variable range ±9.99kHz
PHONES connector 3-conductor 6.35 (d) mm (18″)
EXT SP connector 2-conductor 3.5 (d) mm (18″)/8Ω
Antenna Tuner

Matching impedance range

 

16.7–150Ω unbalanced*1 (HF bands)

20–125Ω unbalanced*2 (50MHz band)

*1Less than VSWR 3:1; *2Less than VSWR 2.5:1
Min. operating input power

8W (HF bands)

15W (50MHz band)

Tuning accuracy VSWR 1.5:1 or less
Insertion loss Less than 1.0dB (after tuning)

All stated specifications are subject to change without notice or obligation.

Supplied Accessories

  • Hand microphone
  • Spare fuses
  • DC power cable
  • CW key plug
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